Home / 8,862.36-13,290.40-2,620.72

Finding the Fourth Proportional to 8,862.36, 13,290.40 and 2,620.72

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Solution

The fourth proportional to 8,862.36, 13,290.40 and 2,620.72 is: 3,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.36 : 13,290.40 = 2,620.72 : x
  2. Step 2: Convert to fraction form
    8,862.36/13,290.40 = 2,620.72/x
  3. Step 3: Cross multiply
    8,862.36x = 13,290.40 × 2,620.72
  4. Step 4: Simplify right side
    8,862.36x = 34,830,417.09
  5. Step 5: Solve for x
    x = 34,830,417.09/8,862.36
  6. Step 6: Final answer
    x = 3,930.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.